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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2013-08-30 11:08:38 (GMT)
committer Peter Korsgaard <jacmet@sunsite.dk>2013-08-30 12:10:50 (GMT)
commiteb53a09fd51da80ef3f35cbbaf11a8068bbaf38f (patch)
tree11fdd1dd8a4444ecffe25fa6b96b3ea0af32a71d
parent014dd9b15304923de9bd3a7aa0e4778b0fa11393 (diff)
downloadbuildroot-eb53a09fd51da80ef3f35cbbaf11a8068bbaf38f.tar.gz
buildroot-eb53a09fd51da80ef3f35cbbaf11a8068bbaf38f.tar.bz2
strongswan: fix build failure when host == target architecture
The strongswan configure.in uses the AC_LIB_PREFIX macro, which adds --with-lib-prefix and --without-lib-prefix options, and which, by default assumes that adding ${prefix}/lib to LDFLAGS and ${prefix}/include to CPPFLAGS is a good idea. Obviously, when cross-compiling, it is definitely not a good idea. In the specific case of strongswan, the result is that when testing if the backtrace() function was available, the small C program was being built and linked with -L/usr/lib. So when the host architecture and target architecture are identical, it may find the backtrace() function in the host C library, without looking at the target C library: configure:16457: /home/test/outputs/a637f916962b6136dd6dd4f4b9ff4e1cab568ef3/output/host/usr/bin/x86_64-unknown-linux-uclibc-gcc -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -pipe -Os -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -L/usr/lib conftest.c >&5 /home/test/outputs/a637f916962b6136dd6dd4f4b9ff4e1cab568ef3/output/host/opt/ext-toolchain/bin/../lib/gcc/x86_64-unknown-linux-uclibc/4.6.3/../../../../x86_64-unknown-linux-uclibc/bin/ld: warning: libc.so.0, needed by /home/test/outputs/a637f916962b6136dd6dd4f4b9ff4e1cab568ef3/output/host/opt/ext-toolchain/bin/../lib/gcc/x86_64-unknown-linux-uclibc/4.6.3/../../../../x86_64-unknown-linux-uclibc/lib/../lib64/libgcc_s.so, may conflict with libc.so.6 Passing --without-lib-prefix prevents this default behavior from happening, and no stupid value is added to CPPFLAGS or LDFLAGS. Fixes: http://autobuild.buildroot.net/results/a637f916962b6136dd6dd4f4b9ff4e1cab568ef3/ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
-rw-r--r--package/strongswan/strongswan.mk1
1 files changed, 1 insertions, 0 deletions
diff --git a/package/strongswan/strongswan.mk b/package/strongswan/strongswan.mk
index 3444f92..aa63d0d 100644
--- a/package/strongswan/strongswan.mk
+++ b/package/strongswan/strongswan.mk
@@ -11,6 +11,7 @@ STRONGSWAN_LICENSE = GPLv2+
STRONGSWAN_LICENSE_FILES = COPYING LICENSE
STRONGSWAN_DEPENDENCIES = host-pkgconf
STRONGSWAN_CONF_OPT += \
+ --without-lib-prefix \
--enable-pkcs11=yes \
--enable-kernel-netlink=$(if $(BR2_INET_IPV6),yes,no) \
--enable-socket-default=$(if $(BR2_INET_IPV6),yes,no) \